Adjustable light system

ABSTRACT

A light having motor means for accurately directing the light beam.

United States Patent Bert Baron 8023 264th 81., Floral Park, NY. 11004; Marvin Winter, 214-04 46th Road,

Inventors Bayside, N.Y. 11361 App]. No. 49,841 Filed June 25, I970 Patented Dec. 7, 1971 ADJUSTABLE LIGHT SYSTEM 2 Claims, 5 Drawing Figs.

U.S. Cl 240/4Ll5, 240/41 .35 A, 240/41.6

Int. Cl. F2lv 13/00 Field of Searc 240/1 .4,

[56] References Cited UNITED STATES PATENTS 3,287,552 1 1/1966 Drandell 240/41.6 X 2,280,402 4/1942 240/41. 15 2,611,367 9/1952 240/61 X 2,911,519 11/1959 Phillips et a1. 240/81 BSX 3,075,073 1/1963 Hildebrecht 240/61.13 3,209,136 9/1965 Fisher 240/3 FOREIGN PATENTS 1,267,916 6/1961 France 240/81 A Primary Examiner-Charles A. Ruehl Altorney- Kane, Dalsimer, Kane, Sullivan and Kurucz ABSTRACT: A light having motor means for accurately directing the light beam.

PATENTEUUEE 7x971 3.826.175

SHEET 2 OF 2 c 74; V AC N 7-0 LAM/95' BY I fad .4, fax hvfw TORNEYJ ADJUSTABLE ucnr SYSTEM BACKGROUND OF THE INVENTION Precise directing of light beams in a structure is particularly desirable in certain types of installations, such as a dentists office. To be useful such a structure must be capable of easy set up so that the light beams can be made to cover a zone with proper configuration at a useful distance and without disturbing glare. Also the light directing means must be such that precise beam directing can be accomplished.

SUMMARY OF THE INVENTION A light structure including in combination vertical expandable telescoping support means, a light canister, a horizontal shaft fixedly supported by the support means and projecting within the light canister, motor means mounted on the light canister and gear means operatively connecting the motor and the horizontal shaft whereby energization of the motor results in rotation of the canister about the horizontal shaft through the gear means. Such a unit having a mounting so that it can easily be set up almost anywhere and wherein the beam distance is a useful 3 to 8 feet with a desired rectangular configuration and a minimum of heat.

DESCRIPTION OF THE DRAWINGS FIG. I is a front elevation of a light structure constructed in accordance with the teachings of our invention;

FIG. 2 is a partial sectional view taken along the line 22 in the direction of the arrows in FIG. 1 showing the internal structure of the light canister;

FIG. 3 is a segmentary view taken in the direction of the arrows indicated by the numeral 33 in FIG. 1;

FIG. 4 is a partial sectional view taken along the line 44 in the direction of the arrows in FIG. 1; and

FIG. 5 is an electrical schematic of the motor and energization means utilized in the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT The lighting fixture shown in the FIGS. includes a telescoping support means consisting of inner and outer tubular sleeves and 12 respectively, which are constructed and arranged so that an end of sleeve 10 can freely slide within sleeve 12. Outer sleeve 12 is provided with a hole 14 and inner sleeve 10 is provided with a vertical slot 16 through which thumb screw 18 projects for engagement with gauge nut 20 in slot 16 for locking the inner and outer sleeves in position relative to one another. Thus the vertical support means provided for the light by the sleeves is expandable. Floor supporting foot 22 and ceiling anchor foot 24 are provided. An anchor protruding pin 26 is also provided to aid in maintaining the vertical support member in desired position.

Opening 30 is provided in sleeve 12 for passage of an electrical wire therethrough.

Horizontal shaft 32 is supported on outer sleeve 12. Opening 34 is provided for wire 28 in sleeve 10. Gear 38 is fixed on shaft 32 and the shaft projects within light canister 40. The light canister is supported on shaft 32 by bearings 42 and 44 so that in the absence of stop means the canister would be free to rotate about shaft 32. Motor 46 is fixedly mounted to the canister in any suitable fashion and gear 48 on the motor shaft meshes with stationary gear 38.

The presence of the motor with its gearing and with the gear 48 mechanically coupled to gear 38 prevents the canister 40 from rotating about shaft 32 and also allows the canister to be rotated upon energization of motor 46 through the gearing 48 and 38.

The light beam directing canister 40 contains a number of sealed beam lights indicated in the FIGS. by the numeral 50 which are maintained in position within the canister by a holder 52. Three such lights are shown in FIG. 2, however any number of lights may be utilized. A light diffraction screen 54 directs the light rays without distortion to shine directly at or to any ob ect which is to be thoroughly lighted. The system can be assembled and placed where diffraction light rays are of utmost importance for professional applications, such as in surgery relative to doctors and dentists practices. The beam directing canister system is primarily designed for close range dentist operational work and is to replace the conventional inadequate lighting system now in use for dentist work. The beams can project within a useful range of 3 to 8 feet and are directed by the deflectors and light array to provide a rectan gular pattern of about 14 inches in width by about 4 inches in depth. The beams in the preferred embodiment have lenses for heat control and which reduce the heat passage. The brilliance can be high with a minimum of glare and in the preferred embodiment the light color is blue-white which enhances the vision of the user. The lights can be directed through the utilization of a pushbutton system and avoids the annoyance of glare striking the patients eyes.

A typical electric system for use with the light structure is illustrated in FIG. 5 wherein motor 46 is shown having field windings 46a and 46b. The numerals .56 and S8 designate normally open switches and the numeral 60 indicates a three position double throw relay having contacts 60a, 60b, 60c and 60d. Clutch brake 62, lamp switch 64 and voltage source 66 are also shown.

In the normal nonenergized position switches 56, 58 and 64 are open as are contacts 60d and 60!). Contacts 600 and 601: are open.

In order for the field windings of motor 46 to be energized lamp switch 64 must be closed. With this switch closed, depression of switches 56 or 58 respectively will result in rotation of the lamps by motor 46 in a clockwise or counterclockwise direction. In operation if switch 56 is depressed current can flow through switch 56, contact 60a and the coil of clutch brake 62 releasing the brake. Current also flows through contact 60c and winding 46b of motor 46 resulting in rotation of the motor. Depression of switch 58 however will result in current flowing through switch 58 and the coil of relay 60 thereby closing contacts 6012 allowing current to flow through clutch brake 62 and contact 60d allowing current to flow through field winding 46a of motor 46 resulting in rotation of the motor in the opposite direction.

We claim:

I. A light structure including in combination a vertical expandable telescoping support means, a light canister, a horizontal shaft fixedly supported by said support means and projecting within said light canister, motor means fixedly mounted on said light canister, gear means operatively connecting said motor and said horizontal shaft whereby energization of said motor results in rotation of said canister about said horizontal shaft through said gear means, said canister including a plurality of beam lights located :side by side and substantially parallel to said horizontal shaft and a diffraction screen in front of said beam lights, and said beam lights being arranged to present a light pattern at a distance from said support means in the range of 3 feet to 8 feet and said pattern has a rectangular configuration in the order of 4 inches in depth and I4 inches in width.

2. A light structure in accordance with claim I in which lenses for heat control are provided in front of the beam lines of said beam lights. 

1. A light structure including in combination a vertical expandable telescoping support means, a light canister, a horizontal shaft fixedly supported by said support means and projecting within said light canister, motor means fixedly mounted on said light canister, gear means operatively connecting said motor and said horizontal shaft whereby energization of said motor results in rotation of said canister about said horizontal shaft through said gear means, said canister including a plurality of beam lights located side by side and substantially parallel to said horizontal shaft and a diffraction screen in front of said beam lights, and said beam lights being arranged to present a light pattern at a distance from said support means in the range of 3 feet to 8 feet and said pattern has a rectangular configuration in the order of 4 inches in depth and 14 inches in wIdth.
 2. A light structure in accordance with claim 1 in which lenses for heat control are provided in front of the beam lines of said beam lights. 